CoMP measurement system and method

Abstract

A subscriber station configured to communicate with one or more base stations or other transmission points (TPs) in a wireless communication network is configured to receive, from the network, information associated with one or more of the TPs that are candidates for coordinated multipoint (CoMP) transmission with the subscriber station, to measure a plurality of channel quality values for each of the one or more TPs, and to report the measured channel quality values to the network.

What is claimed is: 
     
       1. A base station for measurement configuration in a wireless communication system, the base station comprising:
 a transceiver; and 
 a controller configured to:
 transmit, to a user equipment (UE) via the transceiver, measurement configuration information including frequency information and channel state information reference signal (CSI-RS) information, the CSI-RS information including
 a physical cell identifier (ID), 
 a CSI-RS index, and 
 information for generation of a CSI-RS sequence, 
 
 transmit, to the UE via the transceiver, report configuration information including a threshold for an event, and 
 receive, from the UE via the transceiver, a measurement report for the event that is generated based on
 a measured reference signal received power (RSRP) of the CSI-RS according to the measurement configuration information, and 
 the threshold according to the report configuration information. 
 
 
 
     
     
       2. The base station of  claim 1 , wherein the CSI-RS information further includes information on transmission timing for the CSI-RS. 
     
     
       3. The base station of  claim 1 , wherein the measurement configuration information further includes a cell individual offset for the threshold for the event. 
     
     
       4. The base station of  claim 1 , wherein the CSI-RS information is in a list of CSI-RS information included in the measurement configuration information. 
     
     
       5. The base station of  claim 1 , wherein the measurement report is generated in case that a measurement result of CSI-RS becomes better than the threshold. 
     
     
       6. A method for measurement configuration by a base station in a wireless communication system, the method comprising:
 transmitting, to a user equipment (UE), measurement configuration information including frequency information and channel state information reference signal (CSI-RS) information, the CSI-RS information including
 a physical cell identifier (ID), 
 a CSI-RS index, and 
 information for generation of a CSI-RS sequence; 
 
 transmitting, to the UE, report configuration information including a threshold for an event; and 
 receiving, from the UE, a measurement report for the event that is generated based on
 a measured reference signal received power (RSRP) of the CSI-RS according to the measurement configuration information, and 
 the threshold according to the report configuration information. 
 
 
     
     
       7. The method of  claim 6 , wherein the CSI-RS information further includes information on transmission timing for the CSI-RS. 
     
     
       8. The method of  claim 6 , wherein the measurement configuration information further includes a cell individual offset for the threshold for the event. 
     
     
       9. The method of  claim 6 , wherein the CSI-RS information is in a list of CSI-RS information included in the measurement configuration information. 
     
     
       10. The method of  claim 6 , wherein the measurement report is generated in case that a measurement result of the CSI-RS becomes better than the threshold. 
     
     
       11. A user equipment (UE) for measurement in a wireless communication system, the UE comprising:
 a transceiver; and 
 a controller and configured to:
 receive, from a base station via the transceiver, measurement configuration information including frequency information and channel state information reference signal (CSI-RS) information, the CSI-RS information including
 a physical cell identifier (ID), 
 a CSI-RS index, and 
 information for generation of a CSI-RS sequence, 
 
 receive, from the base station via the transceiver, report configuration information including a threshold for an event, and 
 perform, via the transceiver, measurement reporting for the event based on
 a measured reference signal received power (RSRP) of the CSI-RS according to the measurement configuration information, and 
 the threshold according to the report configuration information. 
 
 
 
     
     
       12. The UE of  claim 11 , wherein the CSI-RS information further includes information on transmission timing for the CSI-RS. 
     
     
       13. The UE of  claim 11 , wherein the measurement configuration information further includes a cell individual offset for the threshold for the event. 
     
     
       14. The UE of  claim 11 , wherein the CSI-RS information is in a list of CSI-RS information included in the measurement configuration information. 
     
     
       15. The UE of  claim 11 , wherein the measurement reporting is triggered in case that a measurement result of the CSI-RS becomes better than the threshold, wherein the measurement reporting comprises transmitting a measurement report to the base station via the transceiver. 
     
     
       16. A method for measurement by a user equipment (UE) in a wireless communication system, the method comprising:
 receiving, from a base station, measurement configuration information including frequency information and channel state information reference signal (CSI-RS) information, the CSI-RS information includes
 a physical cell identifier (ID), 
 a CSI-RS index, and 
 information for generation of a CSI-RS sequence; 
 
 receiving, from the base station, report configuration information including a threshold for an event; and 
 performing measurement reporting for the event based on
 a measured reference signal received power (RSRP) of the CSI-RS according to the measurement configuration information, and 
 the threshold according to the report configuration information. 
 
 
     
     
       17. The method of  claim 16 , wherein the CSI-RS information further includes information on transmission timing for the CSI-RS. 
     
     
       18. The method of  claim 16 , wherein the measurement configuration information further includes a cell individual offset for the threshold for the event. 
     
     
       19. The method of  claim 16 , wherein the CSI-RS information is in a list of CSI-RS information included in the measurement configuration information. 
     
     
       20. The method of  claim 16 , wherein the measurement reporting is triggered in case that a measurement result of the CSI-RS becomes better than the threshold.